"Our whole identity used to be football, meat pies and caravans, now it's overseas holidays with focaccias and more sophisticated pursuits," he told news.com.au.

"We used to be the land of the long weekend, but now we work more hours than any other nation - in terms of working hours, plus commute - and deliver success equal to any comparable nation."

Mr McCrindle said Australia has moved away from the remote island culture and changed our self-identity entirely.

"Now we're regional influences across Asia, we have global connections, are exporters and have success in the global sporting, medical and business arenas," he said.

"We've also changed in terms of landscape from when our icons were the beach and outback. Now, it's more about urban environments, cafe culture, city cuisine and a 24/7 lifestyle with gentrified living."

We are now more about cafe culture than Crocodile Dundee.

The demographer said by 2023, Melbourne will have overtaken Sydney as Australia's most populated city, which some people might find surprising.

"Our national, state and city identity is constantly changing. While Sydney, Melbourne and Brisbane remain the top three cities, Adelaide is no longer the fourth largest - it's now Perth," he said.

"In the last three decades Adelaide's population has increased by 42 per cent, while Perth has seen significant growth with a 135 per cent increase."

Mr McCrindle added that Australia is also much more multicultural than it has ever been before.

"The latest census data showed us a changing of the guard, not only in that one in three Australians are born overseas, but more overseas born Australians are coming from Asia than Europe," he said.

26. In NSW, the ACT, Queensland, Victoria, WA, the NT and Tasmania, order a schooner and you'll get a big, 425ml glass. But order the same thing in SA and you'll be disappointed when you receive a small, 285ml glass.